September weather forecast and climate
Philipsburg, Sint Maarten

A bird
A bird's eye view of the coastal city of Philipsburg, in Sint Maarten, with a distant view of the mountains and the Great Salt Pond
September, the first month of the autumn, in Philipsburg, is still a hot month, with average temperature ranging between max 31°C (87.8°F) and min 25°C (77°F).

Temperature

The warmest months are June through October, with an average high-temperature of 31°C (87.8°F).

Rainfall

The month with the most rainfall in Philipsburg is September when the rain falls for 19 days and typically aggregates up to 129mm (5.08") of precipitation.

Sea temperature

Months with the warmest seawater are September and October, with an average sea temperature of 29°C (84.2°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

The average length of the day in September is 12.2h.

Sunshine

Months with the least sunshine are January, February, May through July, September through December, with an average of 8h of sunshine.

UV index

Months with the highest UV index in Philipsburg are March through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an excessive health risk from unsafe exposure to the UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 12 translate into the following recommendations:
Take all necessary precautions, as unprotected skin can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What are the warmest months in Philipsburg?

June through October, with an average high-temperature of 31°C (87.8°F), are warmest months.

What is the temperature in September in Philipsburg?

In Philipsburg, Sint Maarten, in September, the average high-temperature is 31°C (87.8°F), and the average low-temperature is 25°C (77°F).

How much does it rain in Philipsburg in September?

In September, in Philipsburg, the rain falls for 19 days. Throughout September, 129mm (5.08") of precipitation is accumulated.

What is the rainiest month in Philipsburg?

The month with the most rainfall in Philipsburg, Sint Maarten, is September when the rain falls for 19 days and typically aggregates up to 129mm (5.08") of precipitation.

What months are the sea warmest in Philipsburg?

September and October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater in Philipsburg.

What is the water temperature in September in Philipsburg?

In September, the average sea temperature in Philipsburg is 29°C (84.2°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the average length of the day in September in Philipsburg?

In Philipsburg, Sint Maarten, the average length of the day in September is 12.2h.

What is the month with the least sunshine in Philipsburg?

Months with the least sunshine in Philipsburg, Sint Maarten, are January, February, May through July, September through December, with an average of 8h of sunshine.

How many hours of sunshine does Philipsburg have in September?

In September, the average sunshine is 8h.

What is the month with the highest UV index in Philipsburg?

Months with the highest UV index in Philipsburg, Sint Maarten, are March through September, with an average maximum UV index of 12.

What is the UV index reading in September in Philipsburg?

The average daily maximum UV index in September in Philipsburg is 12. A UV Index estimate of 11, and higher, represents an excessive health risk from the exposure to the Sun's UV radiation.
Average temperature in September - Philipsburg, Sint Maarten
  • Average high temperature in September: 31°C

The warmest months (with the highest average high temperature) are June, July, August, September and October (31°C).
Months with the lowest average high temperature are January, February, March and December (29°C).

  • Average low temperature in September: 25°C

Months with the highest average low temperature are June, July, August, September and October (25°C).
The coldest months (with the lowest average low temperature) are January, February, March and December (23°C).

Average rainfall in September - Philipsburg, Sint Maarten
  • Average rainfall in September: 129mm

The wettest month (with the highest rainfall) is September (129mm).
The driest months (with the least rainfall) are February and March (43mm).

Average rainfall days in September - Philipsburg, Sint Maarten
  • Average rainfall days in September: 19 days

The month with the highest number of rainy days is November (21 days).
The month with the least rainy days is April (12 days).

Average sea temperature in September - Philipsburg, Sint Maarten
  • Average sea temperature in September: 29°C

The best months for swimming (with the highest average sea temperature) are September and October (29°C).
The coldest months (with the lowest average sea temperature) are January, February, March and April (26°C).

Average daylight in September / Average sunshine in September - Philipsburg, Sint Maarten
  • Average daylight in September: 12.2h

The month with the longest days is June (Average daylight: 13.2h).
The month with the shortest days is December (Average daylight: 11.1h).

  • Average sunshine in September: 8h

Months with the most sunshine are March, April and August (Average sunshine: 9h).
Months with the least sunshine are January, February, May, June, July, September, October, November and December (Average sunshine: 8).

Average UV index in September - Philipsburg, Sint Maarten
  • Average UV index in September: 12

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 7).